Sound working of transmitting power is very essential. For immaculate working of the machines, bearings play an important and critical role. Standard monitoring methods of performance evaluation of rolling element bearings with high degree of reliability are yet to be explored. Authors have proposed rolling element bearing test rig for the same [3]. The formulation requires essentially the elec...

Magnetic bearings are used in several applications, but they didn’t succeed in the machine tool industry, due basically to their low damping, with its associated low chatter free cutting capacity. This work shows the development of a high speed milling spindle supported on magnetic bearings with high chatter resistance. That is achieved by using control strategies which add damping to the beari...

The influence of grooving parameters and micro-groove cross-section shape on the lubrication performance partially micro-grooved gas-lubricated parallel slider bearings is investigated in present study. solution procedure for multi-grid finite element method that algebraic equations formed by are turn smoothed interpolation from coarse grid to fine restriction grid. By adopting method, pressure...

Large diameter metal-on-metal bearings (MOM) are becoming increasingly popular, addressing the needs of young and more active patients. Clinical data has shown excellent short-to-mid-term results, though incidences of transient squeaking have been noted between implantation and up to 2 years post-operative. Geometric design features, such as clearance, have been significant in influencing the p...

An experimental program has been completed recently to evaluate the long-term performance of the seismic isolation bearings manufactured for the Foothill Communities Law and Justice Center. Two pairs of full-size bearings were tested — one was removed from the building approximately 12 years after installation, and the other pair was from the original set of 4 prototype bearings. This article s...

Bearings are essential parts used in machine tools where high precision is required. It is important to understand bearing failure in order to replace a bearing before it affects the quality of precision. Bearing failure appears as a run-out in some applications, which is a critical factor for precision. However, previous studies have only focused on failure mechanisms, such as spalling. In thi...

Sliding bearings with low coefficient of friction enable the base isolation system with longer natural period than previous ones and to be effective even for small to medium earthquakes. This paper introduces the sliding bearings with low coefficient of friction, which is almost under 0.03. It is shown that newly developed materials for the sliding bearings contribute to reduce coefficient of f...

Gas foil bearing rotor (GFBR) systems have received significant interest in the field of rotordynamics and vibration analysis. GFBR a wide range high-speed turbomachinery applications. Due to high speed, these machines are susceptible rigorous instability. bearings instigate large amplitude vibrations at startup shut down severe subsynchronous motions during operations. Over years, numerous wor...

Introduction Reduction of ultra high molecular weight polyethylene (UHMWPE) surface wear in total knee replacement (TKR) bearings may delay the onset of osteolysis and subsequent loosening of components. Crosslinking has been shown to increase the wear resistance of UHMWPE bearings in multidirectional total hip replacement applications when articulating against smooth counterfaces [1]. The aim ...